Strong point: 5/8,8/10,1 and 12.7 cm hairs, of superior quality, of medium hardness. This drilling brush is made of superior quality plastic. The bristles are durable, enough to remove old stains, and they hold better than the soft carpet brush. Powerful cleaning. Many of our customers use them to remove stubborn stains. You can also use this brush on tiles, joints, pads. General cleaning for all carpets, motorhome door panels, etc. Also for boat decks, ships and woodwork, house coatings, decks, terraces, windows, housings and frames, tiles and joints in bathrooms and showers as well as for floors, wood, etc. Cleaning: this heavy brush is made of 100% polypropylene, making it a very durable material. For best results, rinse the surface with water, then spray or use cleaner or soap. Features: Color: yellow. Size: 5/8,8/10/15,28 cm. Content: 4 drill brushes (drill not included).